Light initially enters the eye through the cornea, it protects the eye and helps to focus light rays into the retina at the back of the eye. The passage of light continues through the pupil which looks like a black circle in the centre of the eye. The pupil is not a structure itself but helps to control the amount of light entering the eye. The iris surrounds the pupil, is the coloured part of the eye. It is a ring of muscles which expand or contract to change the size of the pupil and control the amount of light. The optic nerve carries the visual information from the retina to the primary visual cortex. The optic nerve exits the eye at the back of the retina, the same point where blood vessels enter and exit the eye.
There is no variation, every individual in the population has the allele for the trait.
The statement that explains why carbon-14 cannot be used to date rocks is : ( C ) Carbon-14 can be used only to date the remains of organisms
<h3><u>What is carbon-14 dating</u></h3>
Carbon-14 dating ( radiocarbon dating ) is used to determine the age of a material or substance which must be part of a living organism that has once existed or is still existing.
Carbon -14 dating cannot be used for determining the age of ancient rocks because of :
- The half life of carbon-14 dating and
- Ancient rock materials are not part of a living organism
Hence we can conclude that The statement that explains why carbon-14 cannot be used to date rocks is : Carbon-14 can be used only to date the remains of organisms.
Learn more about Carbon-14 dating : brainly.com/question/9308585
Answer:
Traditionally, all prokaryotic cells were called bacteria and were classified in the prokaryotic kingdom Monera. ... One fundamental difference is that bacterial cells lack intracellular organelles, such as mitochondria, chloroplasts, and a nucleus, which are present in both animal cells and plant cells.
Answer:
Explanation:
This is because, during lytic cycle,
During the lytic cycle, genome willing f the virus always undergo replication and transcription and the enzymes then degraded the bacteria chromosomes which has been coded by the viral genome to produce deoxyribonucleotides that acts as monomers to in order to produce more viral DNA so that virus will be replicated the more.
The virus find it's way into the the bacteria, then take over the whole macromolecular production and degrade components that are in existence in bacteria so as to get new materials to replicate alot of copies of itself.